See the example directory for a concrete example. Here we send a polars DataFrame to rust and then compute a jaccard similarity in parallel using rayon and rust hash sets.

$ cd example && make install $ venv/bin/python run.py

This will output:

shape: (2, 2)
┌───────────┬───────────────┐
│ list_a    ┆ list_b        │
│ ---       ┆ ---           │
│ list[i64] ┆ list[i64]     │
╞═══════════╪═══════════════╡
│ [1, 2, 3] ┆ [1, 2, ... 8] │
│ [5, 5]    ┆ [5, 1, 1]     │
└───────────┴───────────────┘
shape: (2, 1)
┌─────────┐
│ jaccard │
│ ---     │
│ f64     │
╞═════════╡
│ 0.75    │
│ 0.5     │
└─────────┘

$ make install-release

This crate offers a PySeries and a PyDataFrame which are simple wrapper around Series and DataFrame. The advantage of these wrappers is that they can be converted to and from python as they implement FromPyObject and IntoPy.